Vital Signs and Bedside Assessment

1. Why Vital Signs and Bedside Assessment Matter

Vital signs are early warning signals about a patient’s condition. Combined with a quick head-to-toe assessment, they help you:

• Notice deterioration early
• Evaluate response to treatment
• Communicate clearly with the team using objective data

This connects directly to the nursing process you already know:

• Assessment: Vital signs + head-to-toe check = your starting data
• Diagnosis: Patterns in these data suggest nursing problems (e.g., risk for falls, impaired gas exchange)
• Planning & Implementation: You choose and carry out actions (e.g., oxygen, fluids, repositioning)
• Evaluation: Repeat vital signs and reassess to see if the patient improved.

In this module you will:

• Name the core vital signs and typical adult reference ranges (conceptually)
• Understand normal vs abnormal and why trends matter more than single numbers
• Outline a simple head-to-toe assessment you can use at the bedside

2. Core Adult Vital Signs – Conceptual Ranges

Think of these as typical resting values for a healthy adult at sea level, not rigid pass/fail numbers. Always check your local policy and early warning score system.

1. Temperature (T)

• Typical oral range: ~36.0–37.5 °C (96.8–99.5 °F)
• Fever (pyrexia) often considered ≥38.0 °C (100.4 °F), but thresholds vary.

2. Pulse / Heart Rate (HR)

• Typical range: ~60–100 beats per minute (bpm) at rest
• Athletes may be normal at 50s; anxious or in pain patients may be normal at high 90s.

3. Respiratory Rate (RR)

• Typical range: ~12–20 breaths per minute
• One of the earliest indicators of deterioration.

4. Blood Pressure (BP)

• Typical adult: systolic ~100–129 mmHg, diastolic ~60–79 mmHg
• Many guidelines call <120/<80 mmHg "normal"; 130–139/80–89 often "elevated" or "stage 1 hypertension" depending on guideline.

5. Oxygen Saturation (SpO₂)

• Typical on room air: ≥95% for most healthy adults
• Some chronic lung disease patients may be stable at 88–92% (follow their target range order).

6. Pain (often called the 5th or 6th vital sign)

• Measured with a scale (e.g., 0–10) or behavioral tools if non-verbal
• Interpreted in context: location, quality, duration, what makes it better/worse.

These are starting points, not absolute cut-offs. The key is what’s normal for this patient and how it’s changing over time.

3. Classify These Vital Signs (Thought Exercise)

For each scenario, decide if the set of vital signs is reassuring, borderline, or concerning for a typical adult. Then think: What would I do next?

Scenario A

• T: 36.8 °C
• HR: 78 bpm
• RR: 16/min
• BP: 118/72 mmHg
• SpO₂: 98% on room air
• Pain: 2/10, mild surgical site discomfort

> Your task: Classify (reassuring / borderline / concerning) and list one appropriate nursing action.

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Scenario B

• T: 38.6 °C
• HR: 112 bpm
• RR: 24/min
• BP: 104/66 mmHg
• SpO₂: 93% on room air
• Pain: 7/10 abdominal pain, new since this morning

> Your task: Classify and list two actions (e.g., assessments or notifications).

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Scenario C

• T: 35.2 °C
• HR: 54 bpm
• RR: 10/min
• BP: 88/50 mmHg
• SpO₂: 89% on 2 L/min nasal cannula
• Pain: 0/10, but patient is drowsy and difficult to rouse

> Your task: Classify and list three urgent priorities.

Write down your answers before moving on. Compare them to your institution’s early warning score criteria when you have access to them.

4. Temperature and Pulse – What They Tell You

Temperature

What it reflects:

• Balance between heat production (metabolism, shivering) and heat loss (sweating, vasodilation)
• Controlled by the hypothalamus

Common patterns:

• Fever: Often infection, inflammation, or reaction to drugs/blood products
• Hypothermia: Exposure, sepsis, endocrine problems, or post-op effects

Nursing focus:

• Look at other signs: chills, sweating, flushed or cool skin, mental status
• Consider trends: 37.1 → 37.8 → 38.4 °C is more important than a single 38.0 °C

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Pulse / Heart Rate

What it reflects:

• How often the heart contracts per minute
• Influenced by autonomic nervous system, fluid status, pain, anxiety, medications

Key characteristics (not just the number):

• Rate: fast, normal, slow
• Rhythm: regular vs irregular (e.g., atrial fibrillation)
• Strength (amplitude): bounding, normal, weak/thready
• Equality: compare left and right sides (e.g., radial pulses)

Conceptual patterns:

• Tachycardia (HR >100 bpm): can be pain, anxiety, fever, dehydration, bleeding, hypoxia, sepsis, medications (e.g., bronchodilators)
• Bradycardia (HR <60 bpm): can be athletic training, medications (e.g., beta-blockers), heart block, raised intracranial pressure

Nursing application:

• Don’t write “HR 120” and walk away. Ask: Why? What else fits the picture?
• Re-check manually if the number seems inconsistent with how the patient looks.

5. Respirations, Blood Pressure, and Oxygen Saturation

Respiratory Rate (RR)

What it reflects:

• How effectively the patient is ventilating

Why it matters:

• A rising RR is often the earliest sign of deterioration (e.g., sepsis, heart failure, pulmonary embolism).

Key points:

• Count for a full minute if abnormal or borderline
• Observe depth, pattern, use of accessory muscles, and work of breathing

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Blood Pressure (BP)

What it reflects:

• The pressure of blood against arterial walls, influenced by cardiac output and vascular resistance

Conceptual categories (adult, resting):

• Low BP: often &lt;90 systolic or symptomatic (dizzy, confused, cold/clammy)
• Normal-ish: roughly 100–129 / 60–79 mmHg
• High BP: ≥130 systolic and/or ≥80 diastolic (chronic patterns matter)

Nursing focus:

• Compare to baseline: 180/100 → 140/80 after meds may be an improvement, but 140/80 might be low for that patient.
• Check cuff size, limb position, and recent activity.

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Oxygen Saturation (SpO₂)

What it reflects:

• Percentage of hemoglobin saturated with oxygen, measured by pulse oximeter

Key caveats:

• A normal SpO₂ does not guarantee normal ventilation (e.g., in early opioid overdose with supplemental O₂)
• Accuracy can be affected by poor perfusion, movement, nail polish, skin temperature, or dyshemoglobinemias.

Nursing application:

• Don’t rely on SpO₂ alone; pair it with RR, work of breathing, mental status, and skin color.
• Follow prescribed target ranges (e.g., COPD patient may have target 88–92%).

6. Pain as a Vital Sign and the Power of Trends

Pain Assessment

Pain is subjective but very clinically meaningful.

Key elements (OPQRST is a common framework):

• Onset – When did it start? Sudden or gradual?
• Provocation/Palliation – What makes it better or worse?
• Quality – Sharp, dull, burning, cramping?
• Region/Radiation – Where is it? Does it spread?
• Severity – Use a scale (0–10) or faces scale
• Timing – Constant, intermittent, worse at night?

Nursing focus:

• Assess before and after interventions (e.g., analgesia, repositioning)
• Document both the number and the description

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Trends vs Single Readings

Vital signs are most useful when you look at the pattern over time:

• HR: 88 → 96 → 108 → 120 bpm
• RR: 18 → 20 → 24 → 28/min
• BP: 122/78 → 116/74 → 104/68 → 94/60 mmHg
• SpO₂: 97% → 95% → 93% → 91% on same oxygen

Even if each number alone doesn’t trigger an alarm, the trend suggests deterioration.

Link to the nursing process:

• Assessment: Identify the trend
• Diagnosis: Risk for shock, impaired gas exchange, etc.
• Planning/Implementation: Increase monitoring frequency, escalate care, prepare interventions
• Evaluation: Did the trend improve after your actions?

7. A Simple Head-to-Toe Bedside Assessment Structure

Use a systematic pattern so you don’t miss key findings. A common quick structure:

1. General Survey

• First impression: appearance, distress, posture, odor, equipment in use (IVs, oxygen, drains)

1. Neurological

• Level of consciousness (alert, drowsy, confused, unresponsive)
• Orientation (person, place, time, situation)
• Speech (clear, slurred)
• Pupils (size, equal, reactive) if indicated

1. Respiratory

• Rate, rhythm, effort, use of accessory muscles
• Lung sounds (clear, wheeze, crackles, diminished)
• Cough (present? productive?)
• Oxygen device and flow rate

1. Cardiovascular

• Heart sounds (if you auscultate)
• Peripheral pulses, capillary refill
• Edema (where? pitting?)
• Color and temperature of skin

1. Gastrointestinal

• Abdomen: flat, distended, soft, firm, tender
• Bowel sounds (present, absent, hypo/hyperactive)
• Nausea/vomiting, last bowel movement, appetite

1. Genitourinary

• Voiding pattern, color and amount of urine
• Catheter present? Patency and securement

1. Musculoskeletal / Skin

• Mobility, strength, gait (if safe to assess)
• Pressure injury risk areas (sacrum, heels, bony prominences)
• Wounds, dressings, drains

1. Lines, Tubes, and Safety

• IV sites (redness, swelling, pain)
• Drains, feeding tubes, dressings
• Bed position, call bell within reach, fall risk measures

You will often integrate vital signs into this assessment (e.g., check RR and work of breathing while listening to lungs).

8. Putting It Together – Short Bedside Assessment Script

Imagine you enter the room of a post-op patient. Here is how a 2–3 minute focused assessment might sound and look.

1. Introduce and observe

• “Hello, I’m your nurse. I’m here to check how you’re doing.”
• Notice: Are they awake? Comfortable? Labored breathing? Pale or flushed?

1. Check vital signs (while observing)

• Attach BP cuff and pulse ox; count HR and RR (ideally without telling them you’re counting breaths).
• Ask: “Do you feel short of breath? Any chest pain or dizziness?”

1. Quick neuro check

• “Can you tell me your full name and where you are right now?”
• Assess speech, facial symmetry, ability to follow commands.

1. Respiratory and cardiovascular

• Look at chest rise, listen to lungs; check oxygen device and settings.
• Palpate radial pulse, check capillary refill, look for edema.

1. Abdomen and pain

• Inspect and gently palpate abdomen around surgical site.
• “On a scale of 0 to 10, how is your pain right now?”
• Ask about nausea and last time they passed gas or had a bowel movement.

1. Mobility, skin, and safety

• Ask them to move arms/legs if safe; check surgical dressing, look at sacrum/heels if turning is safe.
• Ensure bed is low, brakes on, call bell in reach.

1. Close the loop

• Summarize: “Your blood pressure and oxygen levels are stable. I’ll bring your pain medication and come back to reassess your pain in about 30 minutes.”
• Document your findings clearly and promptly.

9. Quick Check: Interpreting Vital Signs

Answer this question based on what you’ve learned about vital signs and trends.

10. Key Term Review

Flip these cards (mentally or with your study tool) to reinforce core concepts.